BD49L44G-TL

Overview

The BD49L44G-TL is a voltage detector IC from ROHM Semiconductor's BD49 series, designed for monitoring power supply levels in electronic systems. It features a CMOS output type and operates within a maximum supply voltage of 10 V. The device provides a detection threshold of 4.4 V with an accuracy of 1%. It includes a reset delay time of 100 us and consumes a typical operating current of 900 nA. The component is housed in an SSOP-3 package and supports surface mount installation. It functions without manual reset or watchdog timer capabilities.

Feature Summary

• CMOS output interface for direct logic integration
• High accuracy voltage detection at specified thresholds
• Ultra-low current consumption for battery efficiency
• Compact three-pin SSOP surface-mount packaging

Applications

• Processor supervisor circuits requiring precise voltage monitoring
• Battery-powered devices needing low standby current
• Portable electronics with limited power budgets
• Embedded systems utilizing single-channel voltage supervision

Procurement Notes

Verify component authenticity through authorized distributors as the part is marked as obsolete. Confirm package integrity and pin compatibility before integration. Check for moisture sensitivity handling requirements during storage. Ensure design-in compliance with RoHS standards. Validate replacement availability due to end-of-life status.

Selection Notes

Select this component when a fixed 4.4 V threshold with CMOS output is required. Consider the 900 nA quiescent current for energy-sensitive designs. Verify that the SSOP-3 footprint matches the PCB layout constraints. Evaluate if the 100 us reset delay meets system timing requirements. Compare against BD48 series variants if open-drain output is preferred instead.

Part Context

This device belongs to the BD49 series of voltage detectors characterized by CMOS outputs and high precision. It complements the BD48 series which offers open-drain outputs. Both series share similar low-current characteristics and compact packaging options. The BD49 series targets applications requiring digital logic compatibility without additional pull-up components.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The component is listed as obsolete. Designers should evaluate newer ROHM voltage detector models or equivalent third-party solutions with matching threshold voltages and output types.